CompletedNot Applicable

Secular Change of Height in Turkish Young Adults

Turkey (Türkiye)465 participantsStarted 2023-09-01

Plain-language summary

Current Turkish growth reference charts based on anthropometric measurements of individuals with high socioeconomic status in Istanbul in 1989-2002 (TK2002) had shown an increase of mean adult height (1.4 and 2.7 cm in males and females) compared with 1978. Given recent improvements in nutrition, hygiene and access to preventive health services, it is hypothesized that this positive secular trend may continue. A prior power analysis (95% power) showed that at least 122 subjects of each sex were needed to detect a 1.8 cm height increase (p=0.05) vs TK2002. In 2023-2024 a sample of Turkish young adults (18-26 years) was randomly selected from 65,000 students at Istanbul University, originating from every region of Turkey (TK2024). Height, weight, and socioeconomic status (SES, categorized into four groups) were recorded and body mass index (BMI) was calculated. Adult height and BMI were compared with TK2002 and with young adults of Turkish origin living in the Netherlands measured in 2009 (NL2009).

Who can participate

Age range18 Years – 26 Years

SexALL

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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: Age: Participants must be between 18 and 26 years old. Student Status: Participants must be current students at Istanbul University. Voluntary Participation: Participants must voluntarily agree to participate in the study and provide informed, written consent. Exclusion Criteria: Chronic Disease: Participants with a diagnosis of any chronic disease are excluded. History of Surgery Affecting Growth: Participants with a history of any surgery that could affect linear growth are excluded. Growth Retardation: Participants with a diagnosis of growth retardation are excluded. Growth Hormone Administration: Participants who have received growth hormone treatment are excluded. Parental Origin: Participants with a parent born outside of Turkey are excluded. Birth Height or Weight: Participants with a birth height or weight less than -2 standard deviations (SDS) are excluded. Current Height or BMI: Participants with a current height or BMI less than -3 SDS or greater than +3 SDS are excluded.

What they're measuring

Change in Mean Adult Height (cm)

Timeframe: 01.09.2023- 01.05.2024

Change in Body Mass Index (BMI, kg/m²)

Timeframe: 01.09.2023- 01.05.2024

Trial details

NCT IDNCT06514924

SponsorIstanbul University

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2024-06-01